One of the first steps in finding drivers is to first identify the hardware. We have no clue what hardware your motherboard contains and since you didn't bother to identify such, I suggest the following:

To find make and model of pc hardware, EVEREST Home Edition is a free system diagnostics, system information program that will id most hardware on-board a mb. as well as the actual motherboard. It will, in some cases, actually provide a download link for the driver.